Normal weather charts for the Northern Hemisphere
Subtitle: sea-level pressure, 700-mb height and temperature, thickness (700-1000-mb), 500-mb height.
Series: Technical paper -- no. 21; Technical paper (United States. Weather Bureau) -- no. 21.
Publisher: U.S. Dept. of Commerce, Weather Bureau
Published: 1952
Place of publication: Washington, D.C
Language: eng
Number of pages: 74
Subjects: Atmospheric pressure; Meteorology -- Charts, diagrams, etc
Genres: Charts, diagrams, etc.